// SPDX-FileCopyrightText: 2024 John Livingston <https://www.john-livingston.fr/>
//
// SPDX-License-Identifier: AGPL-3.0-only

import type { RegisterServerOptions } from '@peertube/peertube-types';
import type { Router, Request, Response, NextFunction } from 'express';
import { asyncMiddleware } from '../middlewares/async';
import { Emojis } from '../emojis';

export async function initEmojisRouter(
  options: RegisterServerOptions,
  router: Router
): Promise<void> {
  const logger = options.peertubeHelpers.logger;

  router.get(
    '/emojis/channel/:channelId/definition',
    asyncMiddleware(
      async (
        req: Request,
        res: Response,
        _next: NextFunction
      ): Promise<void> => {
        try {
          const emojis = Emojis.singletonSafe();
          if (!emojis) {
            res.sendStatus(404);
            return;
          }

          const channelId = parseInt(req.params.channelId);
          if (!channelId || isNaN(channelId)) {
            res.sendStatus(400);
            return;
          }

          if (!(await emojis.channelHasCustomEmojis(channelId))) {
            res.sendStatus(404);
            return;
          }

          res.sendFile(emojis.channelCustomEmojisDefinitionPath(channelId));
        } catch (err) {
          logger.error(err);
          res.sendStatus(500);
        }
      }
    )
  );

  // Note: CORS is handled by Peertube.
  router.get(
    '/emojis/channel/:channelId/files/:fileName',
    asyncMiddleware(
      async (
        req: Request,
        res: Response,
        _next: NextFunction
      ): Promise<void> => {
        try {
          const emojis = Emojis.singletonSafe();
          if (!emojis) {
            res.sendStatus(404);
            return;
          }

          const channelId = parseInt(req.params.channelId);
          if (!channelId || isNaN(channelId)) {
            res.sendStatus(400);
            return;
          }

          const fileName = req.params.fileName;
          if (!emojis.validImageFileName(fileName)) {
            res.sendStatus(400);
            return;
          }

          if (!(await emojis.channelHasCustomEmojis(channelId))) {
            res.sendStatus(404);
            return;
          }

          res.sendFile(
            emojis.channelCustomEmojisFilePath(channelId, fileName),
            {
              immutable: true,
              maxAge: 1000 * 60 * 60 * 24, // 24h
            },
            (err) => {
              if (err) {
                res.sendStatus(404);
              }
            }
          );
        } catch (err) {
          logger.error(err);
          res.sendStatus(500);
        }
      }
    )
  );
}